Rapid Deceleration Function - YASKAWA CR700 Technical Manual

3.10 Crane Application Setup Procedure
Note:
If the resulting frequency reference after having been multiplied by the gain of S2-16 or S2-17 is less than the frequency reference lower
limit, this lower limit value will be used. The frequency reference lower limit is the maximum setting value for the following
parameters.
• d2-02 [Frequency Reference Lower Limit]
• S1-01 [Brake Release Frequency(FWD)]
• S1-02 [Brake Release Frequency(REV)]
• S1-12 [Brake Hold Frequency (FWD)]
• S1-13 [Brake Hold Frequency (REV)]
MFDI
■
H1-xx
Setting
3A Micro Speed Gain1
3B Micro Speed Gain2
Description of Operation
■

Rapid Deceleration Function

◆
The deceleration rate can be changed to rapidly stop operation by inputting a Run command in reverse to the
current running direction during the ramp to stop operation. This enables quick deceleration near the target
location even when using high-speed operation.
Description of Operation
■
Set S2-18 = 1 [Rapid Deceleration Selection = Enabled] to enable this function.
When deceleration starts after the Run command is turned off, and a Run command in reverse to the current
direction of motor rotation is input, the motor rapidly decelerates per the time set to S2-19 [Rapid Deceleration
Time]. When the Run command is turned off during rapid deceleration, rapid deceleration is turned off, and the
motor continues to decelerate at the selected normal deceleration rate.
224
Name
When the corresponding terminal is on, the frequency reference is multiplied by the gain set to
S2-16 [Micro Speed Gain1].
When the corresponding terminal is on, the frequency reference is multiplied by the gain set to
S2-17 [Micro Speed Gain2].
Note:
When the frequency reduction gain 1 input is on, the gain set to S2-16 [Micro Speed Gain1]
has priority.
YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Description